?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Yusnidar&rft.au=Yusuf%2C+Yusnidar&rft.aulast=Yusuf&rft.title=IJPR&rft.atitle=Analysis+Contens+of+Natrium+Benzoate+and+Sorbic+AcidIn+Beverage+Snack+Sold+at+SDN+Karang+Tengah+Tangerang+City&rft.genre=article